Swine flu pandemic

World Health Organization Director General Margaret Chan (center) holds with Assistant Director General Keiji Fukuda a press conference on Monday in Geneva, after the WHO decided to declare a swine flu pandemic by raising its alert to the maximum level six. The WHO decided to declare its first...

World Health Organization Director General Margaret Chan (center) holds with Assistant Director General Keiji Fukuda a press conference on Monday in Geneva, after the WHO decided to declare a swine flu pandemic by raising its alert to the maximum level six. The WHO decided to declare its first... (Getty Images photo by Fabrice Coffrini)

World Health Organization Director General Margaret Chan (center) holds with Assistant Director General Keiji Fukuda a press conference on Monday in Geneva, after the WHO decided to declare a swine flu pandemic by raising its alert to the maximum level six. The WHO decided to declare its first...Getty Images photo by Fabrice Coffrini